Complete Tandem Axle Trailer Brake Kit Uni-ServoWholesale Marine carries an extensive line of trailer parts including boat trailer brakes and brake kits. They carry drum and disc brakes along with trailer brake actuators. The tandem axle trailer brake kit Uni-Servo is a great option for your tandem axle trailer with 10 inch drum brakes. The set comes with all you need for easy installation of your tandem axle trailer brake kit. Whether you are a do it yourselfer or have an experienced trailer technician install your brake kit a basic knowledge of braking systems is recommended.Kit Includes: 1 DIC-4830000 Brake Line Kit; 4 DIC-1554500 10" Brake Drums; 2 DIC-1878800 Left Side Backing Plates - Uni-Servo; 2 DIC-1878700 Right Side Backing Plates - Uni-Servo; 1 DIC-4332900 Model 60 Brake Coupler;